Antifriction-collar for wood-shapers.



No. 706,488. Patented Aug. 5, I902.

T. S. CBAPP. ANTIFRICTION COLLAR FOR W000 SHAPEBS.

' (App lication filed Nov. 29. 1901.) (No Model.)

K d/MM ATTORNEY.

UNITED STATES PATENT OFFICE:

THOMAS S. GRAPP, OF WAYNETQWN, INDIANA.

ANTIFRICTION-QOLLAR FOR WOOD-SHAPERS.

SPECIFICATION formingpart of Letters Ifatent No. 706,488 dated August 5,1902.

-Application-fild November 29, 1901. Serial. No. 84,010. (No model-l T at, whom it may concern:

Be it known that LTHOMAS-S. ORAPP, a citizen of the United States, residing at Wayne town, in the county of Montgome'ryand State of Indiana, have invented new andu'sef'ul Improvements in Antifriction Collars for Wood-Shapers, of which the following is a.

specification.

This invention relatesto collars for tool to spindles or arbors against which patterns may,

be held when shaping wood on machines" in a well-known manner, and refers particularly to collars that are designed to prevent burning in spots or wearing by abrasion of the before mentioned are-attained'in the con struction illustrated in the accompanying drawings, forming apart of this specification, to which reference maybe had and in which similar reference characters designate corresponding parts in theseveral figures thereof.

Referring to the drawings, Fignrelrepresents a fragmentaryplan view showing the top of the table of a wood-shaper together with the cutter-head and cutters, and also a piece of wood as it might be operated upon connected with the pattern;iFig. 2, a fragmentary vertical sectional view showing the details of construction of the collar when designed to be attached to or form part of a cutter-head; and Fig. 3 is also a fragmentary Vertical sectional view showing the details of construction of the collar when constructed independently of the cutter-head, this view showing a solid hea'dhaving integral cutters. In the drawings, A represents'a horizontal table, as of a wood-shaper or similar machine, above and partly upon which the operations take place.

B represents the machine-spindle, extend- 5e ing through an aperture in the table, only so much of which is shown as will serve to ex"- plain the connection of my improvements portion.

therewith. The spindle has an upper portion'of reduced diameter, at the lower end ofwhich is a shoulder a, against which the lower face hot the cutter-head is usually forced by meansofa nut C, fitted to the upper end of the spindle, the head having a bore fitting over the reduced portion of the spindle. The cutter-head D is circular and is; bored to fit the spindle of the machine, and at the receive insertible cutting-tools or cutters,

as d, a washer 6 being placed upon the tools lower faces thereof may form ball-races.

The lower end ofthe head Dis provided with an adjustable collar H, the upper face of which forms a'ball-race, audit is suitably attached to the head, as by means ofscrewthreads, and locked against movement by suitable means, as a jam-nut 1. Balls G, of steel, are-placed between the shoulderL and the rib F, and balls G are placed between the rib F and the collar H, and thus the collar E is provided with ball-bearin gs operating in both horizontal and vertical directions. The head 1) has a flange extending over the upper end of the collar E to exclude shavings from the bearings, and the flange may obviously be formed either integrally with the head or separately as a washer upon the head. It should be understood also that the head D may be formed alone as a hub or carrier for the collar E and a filling-ring upon which to rest any suitable form of cutterhead that may be a separate part or device of the whole design.-

In Fig. 3 the hub D is bored to fit the spindle and is designed to rest on the shoulder a. The external diameter is substantially uniform from the lower end thereof up to the shoulder L near the upper end of the body Upon the top of the hub is a solid upper end thereof it is suitably adapted to 'cutter h, and, as before stated, a head having insertible'cutters may be used instead of the solid cutter, or the hub itself may be adapted to hold .removable cutters. The collar E is circular and similar to the collar E, having the internal annular rib F, which divides the two series of balls G and G, so that two bearings are formed, the collar H with the shoulder L providing the ball-races and retaining the balls and the collar E. A flange extends from the hub partially over the top of the collar E. The exterior diameter of the collar E is uniform and the surface is smooth.

In practical use the machine-spindlebeing rotated rapidly will carry with it the collar E or E. Let 2' represent the working side of a pattern that is to be moved upon the table of the machine andj a board attached to the pattern. The pattern may be moved against the collar E or E and along the top of the table, the cuttersforming the face of the board .j, according to the designs of the pattern and hub to the spindle, a collar mounted rotatively on the hub, and antifrict-ional bearings mount.- ed between the hub and the collar.

2. A Wood-shaper spindle provided with a hub secured thereto having a projecting flange, a cutter mounted at the top of the hub, a collar adjustably secured to the hub, the spindle and the hub and the cutter moving together, a guide-collar mounted rotatively on the hub between the flange and the collar, and antifrictional bearings mounted between the hub and the guide-collar.

3. An antifrictional guide-collar for woodshaper spindles comprising a bored hub having a flange at the upper portion, a collar adjustably attached to the lower portion of the hub, a collar having an internal annular rib mounted rotatively on the hub, and antifrictional bearings having contact with the sides of the annular rib and also with the hub.

4;. In a wood-shaper spindle, the combination of the hub secured to the spindle and having the downwardly-facing shoulder, the bearing-collar screwed to the lower end of the hub, the locking-nut engaging the bearingcollar, the guid e-collar rotatively mounted on the hub and having the internal annular rib, and the ball-bearings situated at either side of said rib and engaging the shoulder and the bearing-collar, with the cutter, and means whereby the cutter and the hub may be secured to the spindle, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

THOMAS S. ORAPP.

Witnesses:

EDWARD KELLY, HARRY WILSON. 

